<template>
  <a-table bordered :columns="columns" :components="components" :data-source="data">
    <template v-slot:action>
      <a href="javascript:;">Delete</a>
    </template>
  </a-table>
</template>

<script>
import Vue from 'vue'

const columns = [
  {
    title: 'Date',
    dataIndex: 'date',
    width: 200,
  },
  {
    title: 'Amount',
    dataIndex: 'amount',
    width: 100,
  },
  {
    title: 'Type',
    dataIndex: 'type',
    width: 100,
  },
  {
    title: 'Note',
    dataIndex: 'note',
    width: 100,
  },
  {
    title: 'Action',
    key: 'action',
    scopedSlots: { customRender: 'action' },
  },
];
const data = [
  {
    key: 0,
    date: '2018-02-11',
    amount: 120,
    type: 'income',
    note: 'transfer',
  },
  {
    key: 1,
    date: '2018-03-11',
    amount: 243,
    type: 'income',
    note: 'transfer',
  },
  {
    key: 2,
    date: '2018-04-11',
    amount: 98,
    type: 'income',
    note: 'transfer',
  },
];
const draggingMap = {};
columns.forEach(col => {
  console.log(col)
  draggingMap[col.key] = col.width;
});
const draggingState = Vue.observable(draggingMap);
export default {
  name: 'App',
  data() {
    this.components = {
      header: {
        cell: (h, props, children) => {
          let thDom = null;
          const { key, ...restProps } = props;
          const col = columns.find(col => {
            const k = col.dataIndex || col.key;
            return k === key;
          });
          if (!col.width) {
            console.log("NoCol", key)
            return <th {...restProps}>{children}</th>;
          }
          console.log(key, col, props)
          // 拖拽的时候
          const onDrag = x => {
            draggingState[key] = 0;
            col.width = Math.max(x, 1);
          };
          // 拖拽停止
          const onDragstop = () => {
            draggingState[key] = thDom.getBoundingClientRect().width;
          };
          return (
            <th {...restProps} v-ant-ref={r => (thDom = r)} width={col.width} class="resize-table-th">
              {children}
              <vue-draggable-resizable
                key={col.key}
                class="table-draggable-handle"
                w={10}
                x={draggingState[key] || col.width}
                z={1}
                axis="x"
                draggable={true}
                resizable={false}
                onDragging={onDrag}
                onDragstop={onDragstop}
              ></vue-draggable-resizable>
            </th>
          );
        }
      },
    };
    return {
      data,
      columns,
    };
  },
};
</script>
<style lang="less">
.resize-table-th {
  position: relative;
  .table-draggable-handle {
    height: 100% !important;
    bottom: 0;
    left: auto !important;
    right: -5px;
    cursor: col-resize;
    touch-action: none;
  }
}
</style>
